2015-12-22

luzula: a Luzula pilosa, or hairy wood-rush (Default)
2015-12-22 05:14 pm

My adventures with a sextant (and with spherical trigonometry)

For years I have longed to try using a sextant--I blame Patrick O'Brian and my teenage interest in astronomy and celestial mechanics for this. Now my dreams have finally been realized! Read more about this, in great detail. )